The Levites Are Firstfruits to יהוה

And יהוה said unto Moses, Number all the firstborn of the males of the children of Israel from a month old and upward, and take the number of their names. And thou shalt take the Levites for me (I am יהוה) instead of all the firstborn among the children of Israel; and the cattle of the Levites instead of all the firstlings among the cattle of the children of Israel. And Moses numbered, as יהוה commanded him, all the firstborn among the children of Israel. And all the firstborn males by the number of names, from a month old and upward, of those that were numbered of them, were twenty and two thousand two hundred and threescore and thirteen. And יהוה spake unto Moses, saying, Take the Levites instead of all the firstborn among the children of Israel, and the cattle of the Levites instead of their cattle; and the Levites shall be mine: I am יהוה. And for those that are to be redeemed of the two hundred and threescore and thirteen of the firstborn of the children of Israel, which are more than the Levites; Thou shalt even take five shekels apiece by the poll, after the shekel of the sanctuary shalt thou take them: (the shekel is twenty gerahs:) And thou shalt give the money, wherewith the odd number of them is to be redeemed, unto Aaron and to his sons. And Moses took the redemption money of them that were over and above them that were redeemed by the Levites: Of the firstborn of the children of Israel took he the money; a thousand three hundred and threescore and five shekels, after the shekel of the sanctuary: And Moses gave the money of them that were redeemed unto Aaron and to his sons, according to the word of יהוה, as יהוה commanded Moses. Numbers 3:40-51